Human Lung Alveoli Anatomy Diagram - Gas Exchange Structure #279107 (License: Personal Use)

The image depicts a cross-sectional view of lung tissue, illustrating clusters of alveoli and alveolar sacs surrounded by a dense capillary network. The pulmonary artery delivers deoxygenated blood (shown in blue) to the alveolar capillaries, where gas exchange occurs, and the pulmonary vein carries oxygenated blood (red) away. A bronchiole is shown branching into the alveolar region, emphasizing the airway-vascular interface critical for efficient respiration.

Used in medical education, physiology textbooks, and health websites to explain respiratory anatomy and gas exchange mechanisms; targets students, clinicians, and patients seeking foundational knowledge of lung function.